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Median sale price
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ZIP 51003 in Alton, IA: housing market trends

The median home sale price in ZIP 51003 in Alton, IA was $322,405 for the three-month period ending September 2026. Sale prices were 7.9% lower than the same period one year earlier. These are area-level statistics; changes in the mix of homes sold can move the median.

Median sale price
$322,405
three-month period ending September 2026
Median sale price per sq ft
$135.90
three-month period ending September 2026
Active listings
8
three-month period ending September 2026
Typical monthly rent
Unavailable
Rent index · unavailable date

How is housing inventory changing?

There were 8 active listings for the three-month period ending September 2026. Active listings were 27.3% lower than the same period one year earlier. This counts homes active at any time during the period, not only those available on its final day.

How long are homes taking to sell?

The median time on market was 35 days for the three-month period ending September 2026. Sale prices, inventory, and selling time describe different parts of the market; none alone establishes what an individual home will sell for.

Home prices by property type

Published Redfin medians for each home type. Each row covers the three-month period ending in its listed month; missing values remain unavailable.

Property-type comparison for ZIP 51003 in Alton, IA
Home typePeriod endingMedian sale priceSale price / sq ftHomes sold
All homesSeptember 2026$322,405$135.902 · small sample
Single-familySeptember 2026$322,419$135.902 · small sample
TownhousesSeptember 2026UnavailableUnavailableUnavailable
Condos / co-opsSeptember 2026UnavailableUnavailableUnavailable
Multifamily (2–4 units)September 2026UnavailableUnavailableUnavailable

Compare nearby housing markets

Published city and place figures. Check each row’s reporting period and source before comparing; these are separate markets, not neighborhood boundaries.

Nearby market comparison for ZIP 51003 in Alton, IA
MarketMedian sale priceReporting period / source
Alton, IA$322,3463 months ending September 2026 · Redfin
Orange City, IA$304,8553 months ending September 2026 · Redfin
Granville, IA$199,7503 months ending August 2026 · Redfin
Hospers, IA$158,9243 months ending September 2026 · Redfin
Maurice, IA$307,8533 months ending September 2026 · Redfin
Sioux Center, IA$384,8173 months ending September 2026 · Redfin

Recent sale-price history

All residential home types. Each row represents an overlapping three-month period ending in that month. Use the charts above for the full available history and home-type filters. Missing values remain unavailable.

Recent home sale prices for ZIP 51003 in Alton, IA
Period endingMedian sale priceSale price / sq ftActive listings
September 2026$322,405$135.908
August 2026$234,000$118.667
July 2026$199,500$109.398
June 2026$275,000$118.446
May 2026$316,000$138.256
April 2026$276,000$118.229
March 2026$270,000$131.729
February 2026$285,750$125.449
January 2026$320,000$131.7211
December 2025$295,000$126.5811
November 2025$203,000$126.5815
October 2025$203,000$128.9313
September 2025$350,000$129.3111
August 2025$289,625$121.5812
July 2025$289,625$121.5811
June 2025$304,500$124.2812
May 2025$330,000$140.9111
April 2025$327,500$146.148
March 2025$330,000$140.916
February 2025$160,000$92.174
January 2025$160,000$92.175
December 2024$270,000$92.174
November 2024$270,000$88.826
October 2024$275,000$130.945

Sources and definitions

Sale-price and property-type histories use Redfin where available. Redfin observations cover rolling three-month periods. Zillow Research supplies monthly home-value and rent indices and additional market series. Provider selection is shown in the chart details. Each metric retains its own reporting date.

Sale price per square foot describes completed sales with reported floor area; it is not a listing-price measure. Active listings count listings active during the reporting period. Home values and rents are typical-value indices, not sale-price or rent medians. ZIP map boundaries are Census ZCTAs and may differ from provider regions. Related ZIP associations do not imply containment within city boundaries.

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